https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68743
John David Anglin <danglin at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|WAITING |NEW Component|tree-optimization |libfortran --- Comment #13 from John David Anglin <danglin at gcc dot gnu.org> --- Changing back to libfortran as c99_functions.c was compiled with -std=gnu11. I must say this "optimization" is going to cause a lot of teeth gnashing as it reduces the utility of the language and it isn't safe without warnings about reserved key words. Finally, it might not be an optimization.